str = '123456'   # 单引号定义的字符串
print(str)
str = "I'm chinese"    # 就近原则， 现在我想让I后面的单引号作为 文本 而不是 字符串的结束符号？
print(str)
str = 'I\'m chinese'   # 转义字符\'     \n
print(str)
str = 'i am "good boy"'   # 双引号定义的字符串
print(str)
print("*" * 20)
str = """
I am chinese
i from chine
welcome to china
"""
print(str)
print("*" * 20)
str = '''
I am chinese
i from chine
welcome to china
'''
print(str)



